Tesla is still selling plenty of cars. Making the same amount of money on them is getting harder. On Wednesday, the Elon Musk-led automaker reported that its operating income fell 56% year over year to $718 million in the third quarter — below Wall Street's estimates of $746.3 million — while revenue was roughly flat at $28.05 billion. Tesla pointed to higher operating expenses tied to its AI efforts, or "SI"/"Super Intelligence" as Trump prefers, and other R&D projects. Lower regulatory credit revenue and ...